/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraParameterMapHistory.h
Does this variable name contain the "Previous" namespace as one of its intermediate namespaces?
namespace FNiagaraParameterUtilities { bool FNiagaraParameterUtilities::IsPreviousName ( const [FName](API\Runtime\Core\UObject\FName) & InVariableName ) }